| Haverhill to Popovo | 1,332.43 mi (2,144.34 km) |
| Haverhill to Provadia | 1,388.13 mi (2,233.97 km) |
| Haverhill to Radnevo | 1,364.19 mi (2,195.45 km) |
| Haverhill to Radomir | 1,235.33 mi (1,988.07 km) |
| Haverhill to Rakitovo | 1,304.86 mi (2,099.97 km) |
| Haverhill to Rakovski | 1,326.13 mi (2,134.21 km) |
| Haverhill to Razgrad | 1,336.60 mi (2,151.05 km) |
| Haverhill to Razlog | 1,285.37 mi (2,068.60 km) |
| Haverhill to Ruse | 1,302.08 mi (2,095.49 km) |
| Haverhill to Samokov | 1,268.43 mi (2,041.35 km) |
| Haverhill to Sandanski | 1,292.68 mi (2,080.37 km) |
| Haverhill to Sevlievo | 1,300.52 mi (2,092.98 km) |
| Haverhill to Shumen | 1,363.66 mi (2,194.59 km) |
| Haverhill to Silistra | 1,344.31 mi (2,163.45 km) |
| Haverhill to Sliven | 1,363.99 mi (2,195.12 km) |
